Heating, Ventilation, and Air Conditioning (HVAC) plans are used to make and maintain systems of heating and air conditioning. As shown, HVAC plans are an important part of a home or a building’s planning as it shows how water networks, boilers, and air ducts are installed in the apartment area to make sure that the proper planning is done in the building. As per the image, an HVAC plan example should have a dining area, living area, bathroom places, family rooms, and other important space. As per the image, an HVAC plan has three core facts: installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ). While creating the HVAC plan example for an apartment building, the HVAC system is an essential subject to provide documented evidence about the accuracy of results produced by it.